The SpyderLensCal is an autofocus calibration aid that can be used to test the accuracy of autofocus of any camera and to identify problems such as back and front focus.
The SpyderLensCal is an autofocus calibration aid that can be used to test the accuracy of autofocus of any camera and to identify problems such as back and front focus. If your camera model supports this function, the LensCal can also be used as an aid to make autofocus corrections (AF Fine-Tune or Autofocus Microadjustment).
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